0 to (cause something to) twist or bend violently and unnaturally into a different shape or form: --
His face contorted with bitterness and rage.
The mine often starts contorting, frequently encircling the stem.
Later the corridor becomes free and then is strongly contorted, often forming a secondary blotch.
This 1918 superman had tremendous strength, could contort his body like a rubber man and was insensitive to pain.
The later part of the mine is less strongly contorted.
She speaks to them, but then contorts her face and chases them out of the room.
The mine begins as a short, contorted linear mine which enlarges into a funnel and then a large blotch.
The mine is much contorted and at first very indistinct, and sometimes blotch-like.
The mine consists of a corridor that is so strongly contorted that it forms a secondary blotch with brown frass.